Articles | Volume 22, issue 5
https://doi.org/10.5194/hess-22-2775-2018
https://doi.org/10.5194/hess-22-2775-2018
Research article
 | 
08 May 2018
Research article |  | 08 May 2018

Comparison of MODIS and SWAT evapotranspiration over a complex terrain at different spatial scales

Olanrewaju O. Abiodun, Huade Guan, Vincent E. A. Post, and Okke Batelaan

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Revised manuscript not accepted
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Cited articles

Abbaspour, K.: User manual for SWAT-CUP, SWAT calibration and uncertainty analysis programs, Swiss Federal Institute of Aquatic Science and Technology, Eawag, Duebendorf, Switzerland, 2007.
Abbaspour, K. C., Yang, J., Maximov, I., Siber, R., Bogner, K., Mieleitner, J., Zobrist, J., and Srinivasan, R.: Modelling hydrology and water quality in the pre-alpine/alpine Thur watershed using SWAT, J. Hydrol., 333, 413–430, 2007.
Abtew, W. and Melesse, A.: Climate change and evapotranspiration, in: Evaporation and Evapotranspiration, Springer, Dordrecht, 197–202, 2013.
Allen, R. G., Clemmens, A. J., Burt, C. M., Solomon, K., and O'Halloran, T.: Prediction accuracy for projectwide evapotranspiration using crop coefficients and reference evapotranspiration, J. Irrig. Drain. Eng., 131, 24–36, 2005.
Allen, R. G., Pruitt, W. O., Wright, J. L., Howell, T. A., Ventura, F., Snyder, R., Itenfisu, D., Steduto, P., Berengena, J., and Yrisarry, J. B.: A recommendation on standardized surface resistance for hourly calculation of reference ET o by the FAO56 Penman-Monteith method, Agr. Water Manage., 81, 1–22, 2006.
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Short summary
In recent decades, evapotranspiration estimation has been improved by remote sensing methods as well as by hydrological models. However, comparing these methods shows differences of up to 31 % at a spatial resolution of 1 km2. Land cover differences and catchment averaged climate data in the hydrological model were identified as the principal causes of the differences in results. The implication is that water management will have to deal with large uncertainty in estimated water balances.